Detail 01
.675 inch (17.14mm) cup diameter
A larger rim than most high-register pieces. More lip surface engaged, which helps endurance over long sets.
Product detailSKU #1275776903912
SchilkeStandard Series Cornet Mouthpiece Group II in Gold 15A4a Gold
Independent shopping perspective
The Korena take
Gold-plated Schilke 15A4a cornet mouthpiece: large rim, shallow A cup, tight backbore. Built for upper-register playing without dropping to a small diameter.
Strong match
Who this is for
- High-register cornet parts where a small rim hurts endurance
- Players who want brilliance and projection over a broad, dark sound
- Commercial and brass band work sitting above the staff
Consider the trade-offs
When to look elsewhere
- Players needing depth and warmth in the low register
- Anyone who prefers a free-blowing, open feel — this one resists
- Trumpet players; the cornet shank will not fit
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Shallow A cup
The shallowest cup in the line. Brightens the tone and lifts the upper register at the cost of low-end body.
Detail 03
27 throat with tight a-backbore
Adds resistance. You get something to push against up high, but it caps how much air the piece will take.
Detail 04
Number 4 semi-flat rim
Wider, flatter contact patch. Spreads pressure across the lip so high playing is more comfortable for longer.
Detail 05
Gold plating
Slicker feel than silver and no nickel contact. Slightly softer surface, so it shows wear sooner with daily playing.
Detail 06
Cornet shank
Fits cornet receivers only. Trumpet and flugelhorn use different tapers and will not seat properly.
Final check
Know before you order
- 01Mouthpiece only — no pouch or adapter included
- 02The shallow cup thins the low register; keep a deeper piece for legit work
- 03Confirm your horn takes a cornet shank before ordering
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01How is the 15A4a different from the 15A4?
Same rim and cup diameter. The 15A4 uses a larger c-backbore for a more open feel; the 15A4a keeps the tight a-backbore and more resistance.
02Is this a lead mouthpiece?
It is built for upper-register playing — shallow A cup, tight backbore — but with a full .675 inch rim rather than a small one.
03Will it work as my only mouthpiece?
The shallow cup trades low-register body for high-register access. Most players keep a deeper piece for orchestral and legato work.
04Does the number 4 rim really help endurance?
It is a semi-flat rim, so pressure spreads over more of the lip instead of concentrating on a narrow edge. That is what extends playing time.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsBody & build
- Color
- Gold
21 detailsOther
- 15
- 17.12mm, .674 inch cup diameter; 26 throat. An excellent all-around mouthpiece which offers a free blowing, clear sound.
- 16
- 17.20mm, .677 inch cup diameter; 26 throat. This medium-large diameter mouthpiece produces a full, free blowing quality.
- 17
- 17.33mm, .682 inch cup diameter; 26 throat. A compromise of all the medium characteristics, this mouthpiece is an excellent medium to large diameter mouthpiece.
- 18
- 17.52mm, .690 inch cup diameter; 26 throat. The high point being nearer to the center makes this mouthpiece feel smaller than it is. The standard characteristics produce a rich, brilliant tone.
- 19
- 17.65mm, .695 inch cup diameter; 26 throat. The C cup, number 3 rim and standard c-backbore are similar to the model 20 but with a slightly smaller diameter.
- 20
- 17.78 mm, .700 inch cup diameter; 26 throat. This large diameter is for the robust embouchure. Original mouthpiece of choice for Renold O. Schilke.
- 22
- 18.03mm, .710 inch cup diameter; 26 throat. Similar to the model 20 but with a larger inside diameter.
- 24
- 18.29mm, .720 inch cup diameter; 26 throat. Our largest cup diameter offered. This mouthpiece provides a huge volume of sound.
- 15a4
- 17.14mm, .675 inch cup diameter; 27 throat. Same as the 15A4a but with a larger c-backbore for an open feel.
- 16b4
- 17.20mm, .677 inch cup diameter; 26 throat. Same as the model 16C4 except the shallower, medium-small B cup offers more resistance, providing a brighter quality of sound. The 16B4 is an excellent choice for Eb trumpet when a player requires a bigger rim diameter.
- 18c3d
- 17.52mm, .690 inch cup diameter; 26 throat. Similar in dimension to the model 18 but with a larger d-backbore producing a large, teutonic tone.
- 16c4
- 17.20mm, .677 inch cup diameter; 26 throat. Similar to the 16 in dimensions, this mouthpiece offers a number 4 semi-flat rim for a more traditional feel and increased endurance.
- 17d4
- 17.33mm, .682 inch cup diameter; 26 throat. This mouthpiece includes a deeper D cup and number 4 semi-flat rim for improved endurance.
- 15c4
- 17.14mm, .675 inch cup diameter; 26 throat. This mouthpiece is similar to the model 15 but with the number 4 semi-flat rim for increased endurance.
- 17d4d
- 17.33mm, .682 inch cup diameter; 26 throat. A larger blowing mouthpiece than the 17D4 because of the increase d-backbore.
- 16c2
- 17.20mm, .677 inch cup diameter; 26 throat. This model offers the same options as the model 16, but instead offers a number 2 rim for increased flexibility.
- 15a4a
- 17.14mm, .675 inch cup diameter; 27 throat. A larger diameter mouthpiece with a shallow A cup and tight a-backbore for upper register playing. Number 4 semi-flat rim offers comfort in upper register.
- 18b4
- 17.52mm, .690 inch cup diameter; 26 throat. Ideal for a classical player looking for a commercial sound, the medium shallow cup and semi-flat rim provide resistance and comfort for upper register playing. Cup shape offers some sparkle in the sound with enough volume for tone.
- 20d2d
- 17.73mm, .698 inch cup diameter; 26 throat. Similar to the model 20 in diameter but includes a larger D style cup, number 2 semi-round rim and larger d-backbore.
- 17b4
- 17.33mm, .682 inch cup diameter; 26 throat. Well suited for the player looking for a shallower cup in a larger diameter. Medium-small B cup offers more brilliance for projection with number 4 semi-flat rim for comfort.
- 15b
- 17.12mm, .674 inch cup diameter; 26 throat. With the same diameter as the model 15, this mouthpiece includes B style cup which produces a more brilliant sound than the standard model 15 mouthpiece.
